la motee



To all whom it may concern.-

UNITED STATES PATENT OFFICE.

BERNARD J. LA MOTHE, OF NEW YORK, N. Y., ASSIGNOR TO THE UNITED STATESROLLING'STOOK COMPANY, OF SAME PLACE.

CAR-TRUCK.

SPECIFICATION forming part of Letters Patent No. 402,169, dated April30, 1889. Application filed August 30, 1888. Serial r01 284,194. (Nomodel.)

Be it known that I, BERNARD J. LA MorHE, of the city and State of NewYork, have invented an Improvement in Oar-Trucks, of which the followingis a specification.

Previous to my invention car-trucks have been provided with wheels, eachupon a separate axle, and the frames of such trucks have been made ofplates of cast and Wrought metal, and also of wood and metal combined.

In .my present invention I make the truckframe of rods and tubes ofmetal, the side frames being made of rods and the end frames and transomof tubes; but the side frames are each made of two parts, so as toreceive the car-wheels between the two parts of the frames. Thecar-wheels are each upon a separate axle and the boxes for the axles aresupported by the rods of the side frames, as hereinafter set forth."

In the drawings, Figure 1 is a plan of my improved car-truck. Fig. 2 isa longitudinal section of the same at the line x 00 of Fig. 1; and Fig.3 is a section of the line y y of Fig. 1, with the car-wheel and itsaxle in eleva tion.

The truck-frame is somewhat similar to that shown in my application forpatent of like date herewith, the side or longitudinal frames beingcomposed of two ranges of metal rods, (1 a, preferably of steel, and thetransom is made of two ranges of tubes, 1), also of steel, with the rodsof the side frames passing transversely through the transom-tubes; butthe side frames are made in two parts, a b, so that the car-wheels h arebetween the two parts of the side frames, and there are tubes '0 c,forming end frames to the truck, and through these tubes 0 the rods a apass transversely, and nuts f upon the ends of said rods a a confine thetubes 0 c in place.

0' c are bands passing around the tubes 0 c, to keep said tubes fromspreading, and o is a band passing around the transom-tubes b b, to keepthem in their proper position at the center of the truck.

The rods a a pass through the journalboxes d d and support said boxes,and there "are tubes e 6 around the rods a between the journal-boxes andthe tubes 0 and also be- ,tween said boxes and the transom-tubes b, avkthere are bands 6' around each group s a between the tubes 6 b, andthese able that said bearing tubes and bands prevent the journal-boxesand transom-tubes moving upon the rods (1 length, and it projects thesame distance from opposite sides of the wheel, and each end is providedwith journals Z. The bearings for the journals Z may be of usualcharacter and be supported within the journal-boxes d d in any desiredmanner;

It be slightly shorter than the journal of the axle, so that the wheeland its aXle may move slightly endwise in said bearing to allow thewheel to accommodate itself to any irregularities in the align- 7o mentof the track.

By passing the rods of the side frames through the journal-boxes, asshown, and employing tubes around the rods and between the journal-boxesand the end frames and 7.5

transonrtubes, saidv journal-boxes cannot move upon said rods, and boltsand nuts for securing said boxes to their supporting-rods are dispensedwith.

This truck-frame is very strong,but few nuts are required to hold theparts of it together, and said frame, being composed of steel rods andtubes, will spring slightly under strain which would break or bend anordinary frame of cast metal or cast metal and wood.

I claim as my invention- The combination, with the car-wheels and theiraxles and journal-boxes, of the four groups of longitudinal rods a a,passing through and supporting said journal-boxes, go

the rods being arranged in two groups at each side of the truck, withthe wheels between the respective groups of rods, the transom-tubes I),supported by said rods of the side frames,

the end frames, 0, and the tubes 6 and bands 6 around said rods forkeeping the parts of the truck-frame in their proper positions,substantially as and for the purposes specified.

Signed by me this 20th day of August, 888.

B. J. LA MOTHE.

Witnesses:

W rLIAM G. MOTT, CHAS. H. SMITH.

but it is prefer- 65

